#ifndef __SELF_MATH_H
#define __SELF_MATH_H

double func_pow(double x,int k);
double func_sqrt(double x);
double func_abs(double x);
double func_sin(double x);
double func_cos(double x);
double func_atan(double x);
double func_atan2(double y,double x);
double func_asin2(double x);


#endif
